help!!!

[elios115]

i wrote this code but it s not working! so any ideas


N2400 con 0 'Set Serial mode
T9600 con 2 ' Set serial mode Baud Rate (T = True)
VARB0 var BYTE 'Define a variable VARB0 of type byte
TRISA=$FF 'Set port A to 1 (input)
TRISB=$00 'Set port B to 0 (output)

loop:
Serin PORTA.0,2,VARB0 ' B0 = input character Input the data serially from port A, pin0, at a Baud rate of 9600,
PORTB = VARB0 'send the data in VARB0 to PORTB (output)

PAUSE 50 'delay 50ms

Goto loop ' Forever repeat the loop

END 'end the program

[mister_e]

Where your data come from?
Are you using an inverter like MAX232 ?
Did you connect the PIC Supply GND to the External world GND?
What is your crystal speed?
Did you set your config fuse properly?
Did you tied the MCLR pin to VCC?
Any schematic or picture of your prototype?

[elios115]

i did used the max232
i m using 4MHZ oscillator
my data come out from the rs232

below is my attachement of the schematic

[mister_e]

O.K. So How your data is send? I mean... when you send 100 is this the numeric expression 1,0,0 or the ASCII character (wich is "d")?

can your try

Serin PORTA.0,2,#VARB0

What are you using to send your data? Hyperterminal? MCS serial communicator or else?

4 MHZ crystal is maybe not enough... look in the SERIN/SEROUT section... there's some warning on that. DEBUGIN should work better and provide a wider 'modifier' range.

[Rhatidbwoy]

as far as I understand 4MHz is not enough for the 9600 baud. Page 135 in the PBP manual. Second to last paragraph.

[elios115]

well i m using a vb application to send the byte and it is sent as hexadecimal

well i ll look for the 4 MHZ oscillator for such a high bauderate.

[elios115]

hey guys about the 4MHZ not enough for the 9600 baude rate r u sure about it
?